Galaxy On Fire 2 is one of the best games on the App Store: an entire galaxy to explore in a sumptuous space sim. On the PC, however, even a delicious HD makeover can't hide the few sacrifices necessary to make it run on phones and tablets. Still incredibly compelling and rewarding, though, and this price is much more like it.

Thanks to GMG's voucher code, you can grab Galaxy On Fire 2 for less than a fiver... or keep the one-use code in reserve since £6.49 is also a 50% saving. Your call, captain.